Add a new operation eo_ocfs2_extent_contig int extent tree's operation. So that with the new refcount tree, we can calculate whether they are contiguous in its own function.
Signed-off-by: Tao Ma <[email protected]> --- fs/ocfs2/alloc.c | 57 ++++++++++++++++++++++++++++++++++++++--------------- 1 files changed, 41 insertions(+), 16 deletions(-) diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 0c96b27..1fc56f3 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -53,7 +53,17 @@ #include "buffer_head_io.h" #include "refcounttree.h" +enum ocfs2_contig_type { + CONTIG_NONE = 0, + CONTIG_LEFT, + CONTIG_RIGHT, + CONTIG_LEFTRIGHT, +}; +static enum ocfs2_contig_type + ocfs2_extent_rec_contig(struct super_block *sb, + struct ocfs2_extent_rec *ext, + struct ocfs2_extent_rec *insert_rec); /* * Operations for a specific extent tree type. * @@ -123,6 +133,16 @@ struct ocfs2_extent_tree_operations { * to 0 (unlimited). Optional. */ void (*eo_fill_max_leaf_clusters)(struct ocfs2_extent_tree *et); + + /* + * ->eo_ocfs2_extent_contig test whether the 2 ocfs2_extent_rec + * are contiguous or not. Optional. Don't need to set it if use + * ocfs2_extent_rec as the tree leaf. + */ + enum ocfs2_contig_type + (*eo_ocfs2_extent_contig)(struct super_block *sb, + struct ocfs2_extent_rec *ext, + struct ocfs2_extent_rec *insert_rec); }; @@ -386,6 +406,9 @@ static void __ocfs2_init_extent_tree(struct ocfs2_extent_tree *et, et->et_max_leaf_clusters = 0; else et->et_ops->eo_fill_max_leaf_clusters(et); + + if (!et->et_ops->eo_ocfs2_extent_contig) + et->et_ops->eo_ocfs2_extent_contig = ocfs2_extent_rec_contig; } void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et, @@ -459,6 +482,16 @@ static inline int ocfs2_et_root_journal_access(handle_t *handle, type); } +static inline enum ocfs2_contig_type + ocfs2_et_extent_contig(struct ocfs2_extent_tree *et, + struct ocfs2_extent_rec *ext, + struct ocfs2_extent_rec *insert_rec) +{ + return et->et_ops->eo_ocfs2_extent_contig( + ocfs2_metadata_cache_get_super(et->et_ci), + ext, insert_rec); +} + static inline int ocfs2_et_insert_check(struct ocfs2_extent_tree *et, struct ocfs2_extent_rec *rec) { @@ -731,17 +764,9 @@ int ocfs2_search_extent_list(struct ocfs2_extent_list *el, u32 v_cluster) return ret; } -enum ocfs2_contig_type { - CONTIG_NONE = 0, - CONTIG_LEFT, - CONTIG_RIGHT, - CONTIG_LEFTRIGHT, -}; - - /* * NOTE: ocfs2_block_extent_contig(), ocfs2_extents_adjacent() and - * ocfs2_extent_contig only work properly against leaf nodes! + * ocfs2_extent_rec_contig only work properly against leaf nodes! */ static int ocfs2_block_extent_contig(struct super_block *sb, struct ocfs2_extent_rec *ext, @@ -767,9 +792,9 @@ static int ocfs2_extents_adjacent(struct ocfs2_extent_rec *left, } static enum ocfs2_contig_type - ocfs2_extent_contig(struct super_block *sb, - struct ocfs2_extent_rec *ext, - struct ocfs2_extent_rec *insert_rec) + ocfs2_extent_rec_contig(struct super_block *sb, + struct ocfs2_extent_rec *ext, + struct ocfs2_extent_rec *insert_rec) { u64 blkno = le64_to_cpu(insert_rec->e_blkno); @@ -4294,7 +4319,7 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et, if (split_rec->e_cpos == el->l_recs[index].e_cpos) ret = CONTIG_RIGHT; } else { - ret = ocfs2_extent_contig(sb, rec, split_rec); + ret = ocfs2_et_extent_contig(et, rec, split_rec); } } @@ -4339,7 +4364,7 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et, if (rec) { enum ocfs2_contig_type contig_type; - contig_type = ocfs2_extent_contig(sb, rec, split_rec); + contig_type = ocfs2_et_extent_contig(et, rec, split_rec); if (contig_type == CONTIG_LEFT && ret == CONTIG_RIGHT) ret = CONTIG_LEFTRIGHT; @@ -4367,8 +4392,8 @@ static void ocfs2_figure_contig_type(struct ocfs2_extent_tree *et, BUG_ON(le16_to_cpu(el->l_tree_depth) != 0); for(i = 0; i < le16_to_cpu(el->l_next_free_rec); i++) { - contig_type = ocfs2_extent_contig(ocfs2_metadata_cache_get_super(et->et_ci), - &el->l_recs[i], insert_rec); + contig_type = ocfs2_et_extent_contig(et, &el->l_recs[i], + insert_rec); if (contig_type != CONTIG_NONE) { insert->ins_contig_index = i; break; -- 1.6.2.rc2.16.gf474c _______________________________________________ Ocfs2-devel mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-devel
